1.
general meeting, general assembly, plenary session
A meeting of all members of an organization, company, or body. In corporate contexts, refers specifically to a shareholders' meeting. Also used for assemblies of clubs, associations, and international organizations.
Usage
The most common usage is 株主総会 (shareholders' meeting), a legally required annual meeting for corporations. Also used for any organization's plenary meeting where all members gather, such as a club or association. 国連総会 (UN General Assembly) is another well-known compound.